[PATCH V4 12/50] x86/traps: Move the declaration of native_irq_return_iret into proto.h

[Lai Jiangshan]

From: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>

The declaration of native_irq_return_iret is used in exc_double_fault()
only by now.  But it will be used in other place later, so the declaration
is moved to a header file for preparation.

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
---
 arch/x86/include/asm/proto.h | 1 +
 arch/x86/kernel/traps.c      | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h
index 8c5d1910a848..ee07b3cae213 100644
--- a/arch/x86/include/asm/proto.h
+++ b/arch/x86/include/asm/proto.h
@@ -13,6 +13,7 @@ void syscall_init(void);
 #ifdef CONFIG_X86_64
 void entry_SYSCALL_64(void);
 void entry_SYSCALL_64_safe_stack(void);
+extern unsigned char native_irq_return_iret[];
 long do_arch_prctl_64(struct task_struct *task, int option, unsigned long arg2);
 #endif
 
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 43e38aa302d5..95ac6a9e5ebc 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -359,8 +359,6 @@ DEFINE_IDTENTRY_DF(exc_double_fault)
 #endif
 
 #ifdef CONFIG_X86_ESPFIX64
-	extern unsigned char native_irq_return_iret[];
-
 	/*
 	 * If IRET takes a non-IST fault on the espfix64 stack, then we
 	 * end up promoting it to a doublefault.  In that case, take
-- 
2.19.1.6.gb485710b